बाहरी 'वातावरण' (Environment) को मनोविज्ञान के निम्नलिखित में से किस संप्रदाय में सबसे महत्वपूर्ण निर्धारक तत्व माना जाता है?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?